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When we have multiple CPU DAIs in a dailink, typically for SoundWire aggregated solutions with amplifiers on multiple links, we only want to allocate one HDaudio stream_tag. The simplest solution is to allocate the hext_stream/stream_tag for the DAI with index 0 in the dailink, and reuse the same stream for all other CPU DAIs. This assumption relies on serialization of DAIs by the ASoC core, where all CPU DAIs are handled in a loop. The stream release follows the same idea of releasing the tag for the first DAI only. Ideally we would want the loop to be handled in reverse-order to summetry, but there is no risk of reusing a stream_tag which is no longer valid. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Rander Wang <rander.wang@intel.com> Link: https://lore.kernel.org/r/20230807210959.506849-13-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| .. | ||
| ac97 | ||
| aoa | ||
| arm | ||
| atmel | ||
| core | ||
| drivers | ||
| firewire | ||
| hda | ||
| i2c | ||
| isa | ||
| mips | ||
| oss | ||
| parisc | ||
| pci | ||
| pcmcia | ||
| ppc | ||
| sh | ||
| soc | ||
| sparc | ||
| spi | ||
| synth | ||
| usb | ||
| virtio | ||
| x86 | ||
| xen | ||
| ac97_bus.c | ||
| Kconfig | ||
| last.c | ||
| Makefile | ||
| sound_core.c | ||